Hide the extensive content via css is incorrect for the search engine? for the user it is very good, lets see the good aesthetics of the page but I do not know if google likes that the user has to press a button to see the content.

my country is full of small cities with few inhabitants, my main focus is to give my clients a visibility in local google business, some do not value, others appreciate my work very much once finished.

i was made an A/B test. A page reduces bounce rate about 5% and increase the time on web about 1 minute and increase the phone calls ( stupid questions ). My B test have a higer bounce rate and reduces time on web but increase the sales without stupid calls ...

A test increase my SEO

B test increase my business

one i start at made A/B test, i can't stop, need made one, an other, an other an other ....